The number of Islanders registered as actively seeking work was 20 higher than the month before and almost double that of four years ago.
The number of long-term unemployed, who had been out of work for more than a year, also reached its highest level to date and accounted for more than a sixth of the total.
However, it was not all bad news as the unemployment figures show that schemes aimed at getting young people back to work have been making an impact with 30 fewer teenagers recorded as unemployed than in February.
